Exam 18: Asteroid and Comet Impacts

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Asteroid 2004 MN4 (Asteroid Apophis) was expected to pass very close to Earth on Friday, April 13, 2029, with collision odds initially calculated as 1 chance in 37. NASA's further calculations now suggest that odds of a 2029 Earth impact are about how much?

(Multiple Choice)

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(80)

Question 41

The impact of a large asteroid on Earth will NOT typically result in ____.

(Multiple Choice)

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Question 42

How fast do asteroids travel in space?

(Multiple Choice)

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Question 43

Describe the difference between meteors and meteorites.

(Essay)

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Question 44

The only well-documented case of someone being hit by a meteorite occurred in 1954 in the state of _______________.

(Short Answer)

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Question 45

How many mass extinctions do scientists believe have occurred on Earth?

(Multiple Choice)

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Question 46

The _______________ comet, seen by many in 1997, came within Earth's orbit around the sun (on the other side of the solar system) at about 320 million km away at its nearest point.

(Short Answer)

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Question 47

A spacecraft stationed near an asteroid so that its tiny mass can slowly pull the asteroid off its trajectory is known as a(n) _______________.

(Short Answer)

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Question 48

A small piece of rock that enters Earth's atmosphere and survives to reach the ground is a(n) _______________.

(Short Answer)

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Question 49

Most meteorites have a(n) _______________, a very thin layer of dark glass formed by heat when it came through Earth's atmosphere.

(Short Answer)

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Question 50

Showing 41 - 50 of 50

Asteroid 2004 MN4 (Asteroid Apophis) was expected to pass very close to Earth on Friday, April 13, 2029, with collision odds initially calculated as 1 chance in 37. NASA's further calculations now suggest that odds of a 2029 Earth impact are about how much?

The impact of a large asteroid on Earth will NOT typically result in ____.

How fast do asteroids travel in space?

Describe the difference between meteors and meteorites.

The only well-documented case of someone being hit by a meteorite occurred in 1954 in the state of _______________.

How many mass extinctions do scientists believe have occurred on Earth?

The _______________ comet, seen by many in 1997, came within Earth's orbit around the sun (on the other side of the solar system) at about 320 million km away at its nearest point.

A spacecraft stationed near an asteroid so that its tiny mass can slowly pull the asteroid off its trajectory is known as a(n) _______________.

A small piece of rock that enters Earth's atmosphere and survives to reach the ground is a(n) _______________.

Most meteorites have a(n) _______________, a very thin layer of dark glass formed by heat when it came through Earth's atmosphere.

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